Torch.



Ls. FREDERICKSON.

TORCH.

APPLICATION men mun. 1914.

1,138,549. Patented May 4, 1915.

r I avwautop J5. Eadie/whom un finances curs where the torch is used forany length JAMES SHERIDAN FBEDEBICKSON, OF VALLEJO, CALIFORNIA.

TORCH.

Application filedJuly 17, 1914. Serial No. 851,610.

' ticularly to tips for oxygen gas, hydrogen gas or oxy acetylene gascutting or welding torches, In using this type of torch it has beenfound highly desirable to keep the tip cool so as to prevent back firingor premature ignition which puts out the flame. When this happens whilemaking the weld the oxygen as oxidizes the metal and ruins the weld at te same time cutting right down into the metal.

Another object in cooling the tip is to prevent damage to the tip whichfrequently ocoftime.

It is, therefore, the object of this invention to provide novel andeflicient cooling means which prevents excessive heating of the tip,thereby eliminating premature ignition and avoiding damage to the tip.

Another object of the invention is to provide a novel cooling meanswhich may be readily removed and applied to the tipsand which may beadapted for tips of any character.

Further objects of the invention will appear as the followingdescription is read in connection with the accompanying drawing, whichforms a part of this application, and in which the figure is aperspective view showing the invention applied to an ordinary oxyacetylene burner with parts in section.

Referring more particularly to the drawing, 1 represents an ordinary oxyacetylene torch connected with the supply pipes 2 and Specification ofLetters Patent.

. is in use normal position the coil may be readily re- Patented May 4,1915.

3, the former adapted to convey oxygen to the burner head 4 and thelatter adapted to convey acetylene gas-to said head. The head 4 is shownas provided with the usual form of tip 5 and in this instance the headis wound with a spirally arranged cooling coil 6 connected to a sourceof supply by the tube 7 and discharging through a similar tube 8. Thetubes 7 and 8 are held alongside of the torch in any suitable manner andthe supply tube is preferably provided with a regulating valve 9. Thesupply tube may be connected to any suitable source of supply and thecooling fluid which passes therethrough may beunder pressure orotherwise. These coils are preferably constructed of soft, copper tubingso that they .can be wound around the tip-s to conform thereto and lieagainst all portions of the outer surface. The unequal expansion betweenthe tip and the coils efi'ectively holds the coil in position upon thehead when the burner but when the parts are restored to moved for re airor replacement of the tip if found to e necessary. It is believed,however, that with the use of this coil that the tips will have a lifeequal tothe life of the torch proper.

What is claimed is:-

In a torch, a burner tip, a cooling coil removabl surrounding the tipand held in position tiiereon by expansion of the tip when in operation,supply and discharge pipes connected to the 0011, and means forcontrolling the supply of cooling fluid to the coil.

In testimony whereof I aflix my signatur in presence of two witnesses.

. JAMES SHERIDAN FREDERICKSON.

Witnesses:

J. F. SILVA, WADE H. MADREN.

